You can put this solution on YOUR website! First let's find what 20% of $125 is. Let's convert 20% into a decimal. Move the invisible decimal point, after the 0, two spaces to the left. We get 0.20, or 0.2. Multiply 125 by 0.2.
We've found 20% of 125. But we're not done yet, though!
Subtract 25 from 125.
$100 is the new price.
Hope I helped!